diff --git a/CHANGES.md b/CHANGES.md
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,5 +1,9 @@
 # Change Log
 
+## 1.0.3
+
+* Support bytestring version in resolver >= 23.1
+
 ## 1.0.2
 
 * Support vector 0.13
diff --git a/zenacy-unicode.cabal b/zenacy-unicode.cabal
--- a/zenacy-unicode.cabal
+++ b/zenacy-unicode.cabal
@@ -1,5 +1,5 @@
 cabal-version: >= 1.10
-version: 1.0.2
+version: 1.0.3
 name:
   zenacy-unicode
 synopsis:
@@ -19,7 +19,7 @@
 maintainer:
   Michael Williams <mlcfp@icloud.com>
 copyright:
-  Copyright (C) 2015-2021 Michael P Williams
+  Copyright (C) 2015-2025 Michael P Williams
 category:
   Web
 build-type:
@@ -38,7 +38,7 @@
     Zenacy.Unicode
   build-depends:
     base              == 4.*,
-    bytestring        >= 0.10.6.0 && < 0.12,
+    bytestring        >= 0.10.6.0 && < 0.13,
     vector            >= 0.11 && < 0.14,
     word8             >= 0.1.2 && < 0.2